Diaphragm device for operating valves, &amp; c.



No. 652,859. Patented July 3, I900.

, F. s. NEWMAN. DIAPHRAGM DEVICE FOR 'OPERATING VALVES, 81.0.

(A fiiemon filed Jan. 17, 1898.)

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INITED STATES PATENT FrIcE.

DIAPHRAGM DEVICE FOR OPERATING VALVES, 80c.

SPECIFICATION forming part of Letters Patent No. 652,859, dated. July 3, 1900. Application filed January 17, 1898. Serial No. 666,996. (No modeli) To all whom it may concern:

Be it known that I, FREDERICK S. NEW MAN, a citizen of the United States of America, residing in Springfield, in the county of Hampden and State of Massachusetts, have in vented new and useful Improvements in Diaphragm Devices for Operating Valves, &c., of which the following is a specification, reference being had to the accompanying drawing and letters of reference marked thereon.

I have illustrated my invention as applied to a diaphragm valve, the construction being shown in a vertical sectional view.

In detail, a designates a supporting yoke or piece; I), a lower wall of the diaphragmchamber; 0, the upper wall of the diaphragmchamber; 01, the valve-stem threaded in the stem f and projecting through the lower wall of the diaphragm-chamber e, the plate; g, the diaphragm; h h, springs to lift the stem f; 'L, a plate mounted in the chamber above the diaphragm. j is a stem on the plate '5; 7c, adjusting screw or threaded stem. Z is a threaded cap in which the stem 70 is mounted.

The objects of my invention are to provide a construction wherein the diaphragm will not be injured or in any manner rendered liable to leakage, to avoid danger of injury to the diaphragm, to simplify and cheapen the construction, and to improve the efficiency of the device.

The construction of my device will be readily understood on reference to the drawing,

' wherein is shown adiaphragm-chamber having a diaphragm g mounted therein, and the plate 6, provided with the stem f, mounted in the chamber below the diaphragm, said stem being suitably connected with a valvestem, the device to be operated and suitable means being provided to run the diaphragm and parts operating therewith to their normal position when pressure above the diaphragm is r leased. A plate 5 is provided, having stem j, which stem fits somewhat loosely in the end of the threaded stem of the rod is, so that when it is desired to secure the diaphragm and parts operated therewith no wise affected, because the plate't', with its stem j, will move upward and downward with perfect freedom, and it will be observed that this construction renders it entirely unnecessary to provide the diaphragm between the plates with a very large area, so that danger of injury because of contact with the small area is entirely avoided and the construction of the device is simplified and cheapened.

Having therefore described my invention, what I claim, and desire to secure by Letters Patent, is--=- 1. The combination of a suitable diaphragmchamber, a diaphragm mounted therein, a plate as 6 located below the diaphragm, a stem attached to said plate and projecting through the wall and a-plate '5 arranged above the diaphragm restrained from lateral movement but free to move verticallythrough the medium of a reciprocating stem extending from plate i.

' 2. The combination of a suitable diaphragm chamber, a diaphragm mounted therein, a plate as 6 located below the diaphragm, a stem attached to the plate e and projecting through the wall, a plate t arranged above thediaphragm restrained from lateral movement but free to move vertically, through the medium of a reciprocating stein extending from plate 1'- and threaded stem 7:.

arranged to engage the plate t' substantially as shown.

FREDERICK S. NEWMAN. Witnesses:

ALLEN WEBSTER, S. SWEENEY. 

